[How to] Get Instant Invites as DD/Heal for Heroic dungeons
First Step: Get a RealID-Friend which can tank. If you got one, invite him to your group (there is a new feature).
Second Step: You queue for any Dungeon (random heroic Zandalari as example)
Third Step: Because your RealID-Buddy is tank, u'll have an instant Invite. Accept it.
Fourth Step: Let your RealID-Buddy-tank leave.
Fifth Step: Normally u'd get kicked now, but u wont.
Notes: If you abuse this to often, u'll still removed.
I did it once & nothing happened. Could clear the dungeon without my RealID-tank-buddy.
Cleared up by Roflcopter:
"Normally you get booted when you queue up with a tank from your server and the tank leaves in the instance (queue selling)
If you use the RealID Friend feature, you will NOT get booted when your tank buddy leaves right away."
Source
New Real ID party queue bug - MMO-Champion BlueTracker